diff --git a/src/script/lua_api/l_craft.cpp b/src/script/lua_api/l_craft.cpp
index b0a47bf..a8bb745 100644
--- a/src/script/lua_api/l_craft.cpp
+++ b/src/script/lua_api/l_craft.cpp
@@ -130,6 +130,13 @@ bool ModApiCraft::readCraftReplacements(lua_State *L, int index,
        }
        return true;
 }
+class FooException : public std::exception
+{
+       virtual const char * what() const throw()
+       {
+               return "FooException what() text";
+       }
+};
 // register_craft({output=item, recipe={{item00,item10},{item01,item11}})
 int ModApiCraft::l_register_craft(lua_State *L)
 {
@@ -137,6 +144,7 @@ int ModApiCraft::l_register_craft(lua_State *L)
        //infostream<<"register_craft"<<std::endl;
        luaL_checktype(L, 1, LUA_TTABLE);
        int table = 1;
+       throw FooException();

        // Get the writable craft definition manager from the server
        IWritableCraftDefManager *craftdef =